Max and his friends have already fought off three terrible Robobeasts. Now they face the ultimate battle, as the evil Professor tries to use Mangler the Dark Menace to destroy the ocean worlds! Don't miss the other books in this series: Shredder the Spider Droid, Stinger the Sea Phantom and Crusher the Creeping Terror.

Max and his friends have already fought off three terrible robobeasts. Now they face the ultimate battle, as the evil Professor tries to use Mangler the Dark Menace to destroy the ocean worlds!

Spectron, the Sea Ghost City, is in danger! The wicked Professor has unleashed another of his menacing Robobeasts. Can Max and his friends defeat Stinger the Sea Phantom and protect the Sea Ghosts? Don't miss the other books in this series: Shredder the Spider Droid, Crusher the Creeping Terror and Mangler the Dark Menace.

Far beneath the waves, Max's Quest grows ever more challenging as he encounters mythical sea creatures. Max must tackle Crusher the Creeping Terror, or the evil Professor and his Robobeast will ruin the precious Crystal Forest! Don't miss the other books in this series: Shredder the Spider Droid, Stinger the Sea Phantom and Mangler the Dark Menace.

When Max meets the mysterious Sea Ghosts, they ask for his help. An evil genius is threatening to wreck their city! Max ventures beneath the seabed -- where he must battle Shredder the Spider Droid!

A new Sea Quest continues! Max and his friends have already fought off three terrible Robobeasts. Now they face the ultimate battle, as the evil Professor tries to use Mangler the Dark Menace to destroy the ocean worlds! Don't miss the other books in this series: Shredder the Spider Droid, Stinger the Sea Phantom and Crusher the Creeping Terror.

Far beneath the waves, Max's Quest grows ever more challenging as he encounters mythical sea creatures. Max must tackle Crusher the Creeping Terror, or the evil Professor and his Robobeast will ruin the precious Crystal Forest! Don't miss the other books in this series: Shredder the Spider Droid, Stinger the Sea Phantom and Mangler the Dark Menace.